weatherstation/firmware/libraries/APDS9930-master/examples/ProximityLED/ProximityLED.ino
Kai Lauterbach 0cf171093b Libraries
2022-05-09 09:34:49 +02:00

131 lines
No EOL
3.4 KiB
C++
Executable file

/****************************************************************
ProximityLED.ino
Davide Depau
December 11, 2015
https://github.com/Davideddu/APDS9930
https://github.com/sparkfun/APDS-9930_RGB_and_Gesture_Sensor
Tests the proximity sensing abilities of the APDS-9930.
Configures the APDS-9930 over I2C and polls for the distance to
the object nearest the sensor, then turns on an LED accordingly.
Hardware Connections:
IMPORTANT: The APDS-9930 can only accept 3.3V!
Arduino Pin APDS-9930 Board Function
3.3V VCC Power
GND GND Ground
A4 SDA I2C Data
A5 SCL I2C Clock
10 (PWM) LED Anode
Resources:
Include Wire.h and APDS9930.h
Development environment specifics:
Written in Sublime Text + Stino + Arduino 1.7.2
Tested with Arduino Uno + level shifter
This code is chocolateware; if you see me at the grocery store,
and you've found our code helpful, please buy us me a chocolate bar! :D
Distributed as-is; no warranty is given.
****************************************************************/
#define DUMP_REGS
#define PWM_LED_PIN 10
#include <Wire.h>
#include <APDS9930.h>
// Global Variables
APDS9930 apds = APDS9930();
uint16_t proximity_data = 0;
int proximity_max = 0;
void setup() {
//analogReference(EXTERNAL);
pinMode(PWM_LED_PIN, OUTPUT);
// Initialize Serial port
Serial.begin(9600);
Serial.println();
Serial.println(F("------------------------"));
Serial.println(F("APDS-9930 - ProximityLED"));
Serial.println(F("------------------------"));
// Initialize APDS-9930 (configure I2C and initial values)
if ( apds.init() ) {
Serial.println(F("APDS-9930 initialization complete"));
} else {
Serial.println(F("Something went wrong during APDS-9930 init!"));
}
// Adjust the Proximity sensor gain
if ( !apds.setProximityGain(PGAIN_1X) ) {
Serial.println(F("Something went wrong trying to set PGAIN"));
}
// Start running the APDS-9930 proximity sensor (no interrupts)
if ( apds.enableProximitySensor(false) ) {
Serial.println(F("Proximity sensor is now running"));
} else {
Serial.println(F("Something went wrong during sensor init!"));
}
#ifdef DUMP_REGS
/* Register dump */
uint8_t reg;
uint8_t val;
for(reg = 0x00; reg <= 0x19; reg++) {
if( (reg != 0x10) && \
(reg != 0x11) )
{
apds.wireReadDataByte(reg, val);
Serial.print(reg, HEX);
Serial.print(": 0x");
Serial.println(val, HEX);
}
}
apds.wireReadDataByte(0x1E, val);
Serial.print(0x1E, HEX);
Serial.print(": 0x");
Serial.println(val, HEX);
#endif
}
void loop() {
// Read the proximity value
if ( !apds.readProximity(proximity_data) ) {
Serial.println("Error reading proximity value");
} else {
Serial.print("Proximity: ");
Serial.print(proximity_data);
// This is an ugly hack to reduce sensor noise.
// You may want to adjust POFFSET instead.
/*
proximity_data -= 200;
if (proximity_data > 50000) {
proximity_data = 0;
}
if (proximity_data > proximity_max) {
proximity_max = proximity_data;
}
proximity_data = map(proximity_data, 0, proximity_max, 0, 1023);
*/
Serial.print(F(" Remapped: "));
Serial.println(proximity_data);
analogWrite(PWM_LED_PIN, proximity_data);
}
// Wait 250 ms before next reading
delay(10);
}